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function disable_save_if_safe()
{
/* If this is defined, this engine supports change notification, so is able
* to enable the button again. Disable it for them. */
if(editbox.editor.addChangeHandler)
{
var savebutton = document.getElementById("save_button");
savebutton.disabled = true;
window.onbeforeunload = null;
}
}
function save_file(filename)
{
data = editbox.getCode();
/* Do NOT refresh the page contents (causes problems for editarea and is
* unnecessary). */
if (current_file.svnstatus != "revision" ||
confirm("You are currently viewing an older version of this file. " +
"Saving will overwrite the current version. " +
"Are you sure you want to continue?"))
{
do_action("putfile", filename,
{"path":".", "data":data, "overwrite":"true"},
"multipart/form-data", true);
disable_save_if_safe();
}
}
function save_file_as(default_filename)
{
filename = prompt("Path to save to:", default_filename);
if (!filename) return;
/* The filename will be path_joined with the app name, so needs to not
* be absolute, lest it clobber the app name. */
if (filename.charAt(0) == "/") filename = filename.substring(1);
ajax_call(save_file_as_callback, "fileservice", filename, {}, "POST");
}
function save_file_as_callback(response)
{
if (response.status == 404 || confirm("Are you sure you want to overwrite " + filename + "?"))
save_file(filename);
}
/* Return a warning to be used in window.onbeforeunload. */
function confirm_beforeunload() {
return 'If you continue, any unsaved changes to the current file will be lost.';
}
function edit_text()
{
var savebutton = document.getElementById("save_button");
savebutton.disabled = false;
window.onbeforeunload = confirm_beforeunload;
}
/** Presents the "editor heading" inserting it into a given element at
* the front. Note that the save widget is handled by the Python.
*/
function present_editorhead(elem, path, handler_type)
{
var div = document.getElementById("actions2");
/* Print a warning message if this is not actually a text file.
*/
if (handler_type != "text")
{
var warn = dom_make_text_elem("p",
"Warning: You are editing a binary " +
"file, which explains any strange characters you may see. If " +
"you save this file, you could corrupt it.");
div.appendChild(warn);
}
}
function highlighting_changed(select)
{
editbox.edit(editbox.getCode(), select.value);
}
function initialise_codepress()
{
editbox.addChangeHandler(edit_text);
editbox.addSaveHandler(function() {document.getElementById("save_button").click()});
/* We can only safely disable the save button on the first load.
* Syntax highlighting changes will also get this function called.
* We unfortunately need the change handler added each time.
*/
if (!initialise_codepress.already)
{
disable_save_if_safe();
initialise_codepress.already = true;
}
}
/** Presents the text editor.
*/
function handle_text(path, text, handler_type)
{
/* Create a textarea with the text in it
* (The makings of a primitive editor).
*/
var files = document.getElementById("filesbody");
/* Put our UI at the top */
present_editorhead(files, path, handler_type);
var div = document.createElement("div");
div.style.height = '100%';
files.appendChild(div);
var txt_elem = dom_make_text_elem("textarea",
text.toString())
div.appendChild(txt_elem);
txt_elem.setAttribute("id", "editbox");
language = language_from_mime(current_file.type);
// Assume plaintext if no type can be determined.
language = language ? language : "text";
document.getElementById("highlighting_select").value = language;
txt_elem.className = "codepress autocomplete-off " + language;
txt_elem.setAttribute("onchange", "edit_text()");
/* TODO: Make CSS height: 100% work */
txt_elem.setAttribute("rows", "35");
CodePress.run();
window.onbeforeunload = confirm_beforeunload;
/* And set a callback so we know that the editor iframe is loaded so we
* can set a callback so we know when to enable the save button.
* We also take this opportunity to disable the save button, if
* the browser is likely to reenable it as needed. */
editbox.onload = initialise_codepress
}
function language_from_mime(mime)
{
return {'text/x-python': 'python',
'application/javascript': 'javascript',
'text/css': 'css',
'text/plain': 'text',
'text/html': 'html',
'application/xml': 'html',
'application/xhtml+xml': 'html'}[mime];
}
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